1. Mix together kidney beans, mushrooms, rice milk and vegan bread crumbs.
2. Heat oil over medium heat in a shallow pan. Split the bean mixture in 1/2 and form it into 2 patties (you can freeze the other one for later if you like).
3. Fry it in the oil until brown on both sides. Serve howe'ver you prefer (in a pita is pretty good, or on dark rye).